Seismicity and earthquake focal mechanisms in the Baikal rift zone

1978 ◽  
Vol 45 (1) ◽  
pp. 71-85 ◽  
Author(s):  
S.I. Golenetsky ◽  
L.A. Misharina
Author(s):  
V. Melnikova ◽  
N. Gileva ◽  
A. Seredkina ◽  
O. Masalskii

We considered the character of the seismic process in the Baikal and Transbaikalia region in 2014. 8782 earthquakes with КР≥5.6 were recorded within the study territory during that year, 94 % of them were located in the Baikal rift zone. 26 seismic events were felt in the cities, towns and local settlements with the intensity not exceeding 5. The strongest of them (Mw=5.5) occurred in the Baikal-Muya region of the Baikal rift zone and was followed by a large earthquake sequence. Focal mechanisms were determines for 46 shocks from the data on P-wave first motion polarities, seismic moment tensor (focal mechanism, scalar seismic moment (M0), moment magnitude (Mw) and hypocentral depth (h)) was calculated for 11 events from the data on amplitude surface wave spectra. It has been found that normal fault movements are realized in the sources of 59 % of the earthquakes with the obtained focal mechanisms. In general, high level of seismic activity is a characteristic feature of the considered territory in 2014.


Author(s):  
Valentina Melnikova ◽  
N. Gileva ◽  
O. Masalskii

The seismicity of Pribaikalye and Transbaikalia in 2013 is reviewed. 6706 earthquakes with КР≥5.6 were recorded there during that year. Most of them (92 %) are located in the Baikal rift zone. The high degree of clustering of seismic events is observed in South Baikal and Baikal-Muja areas. The largest earthquake with Mw=4.3 was in the Baikal-Muja area. Focal mechanisms of 47 earthquakes (КР9.6) were determined in 2013. Most of them correspond to normal faults, with strike-slip component contribution in some cases. Overall, the rate of seismic activity observed in Pribaikalye and Transbaikalia in 2013 was low.


2013 ◽  
Vol 81 ◽  
pp. 1-15 ◽  
Author(s):  
H.M. Hussein ◽  
K.M. Abou Elenean ◽  
I.A. Marzouk ◽  
I.M. Korrat ◽  
I.F. Abu El-Nader ◽  
...  

1995 ◽  
Vol 100 (B10) ◽  
pp. 20321-20343 ◽  
Author(s):  
Albert A. Lukk ◽  
Sergei L. Yunga ◽  
Vladimir I. Shevchenko ◽  
Michael W. Hamburger

2012 ◽  
Vol 48 (4) ◽  
pp. 354-362 ◽  
Author(s):  
B. G. Gavrilov ◽  
Yu. I. Zetzer ◽  
V. I. Kurkin ◽  
I. E. Markovich ◽  
Yu. V. Poklad ◽  
...  

1993 ◽  
Vol 20 (15) ◽  
pp. 1635-1638 ◽  
Author(s):  
C. Ruppel ◽  
M. G. Kogan ◽  
M. K. McNutt

2014 ◽  
Vol 85 (2) ◽  
pp. 257-267 ◽  
Author(s):  
G. A. Johnson ◽  
S. P. Horton ◽  
M. Withers ◽  
R. Cox

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